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| 1 <!DOCTYPE html> |
| 2 <canvas></canvas> |
| 3 <script> |
| 4 |
| 5 if (window.testRunner) |
| 6 testRunner.waitUntilDone(); |
| 7 |
| 8 var canvas = document.querySelector("canvas"); |
| 9 var context = canvas.getContext("2d"); |
| 10 |
| 11 // first frame |
| 12 |
| 13 requestAnimationFrame(function() { |
| 14 |
| 15 // second frame which doesn't have a dirty |
| 16 context.scale(2, 1); |
| 17 |
| 18 requestAnimationFrame(function() { |
| 19 |
| 20 // third frame which has a dirty |
| 21 context.scale(2, 1); |
| 22 context.fillRect(0, 0, 10, 10); |
| 23 |
| 24 if (window.testRunner) |
| 25 testRunner.notifyDone(); |
| 26 |
| 27 }); |
| 28 }); |
| 29 |
| 30 </script> |
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